I have tested several Source Engine Games with the latest Procaster version.

All except Portal 2 (L4D 1&2 only working sometimes) are not working with the Procaster.
Is there anything you can do to get this working?

Hello,

We are aware of some Valve Source Engine games not working with procaster. There was an update a few weeks ago from Valve that changed how some games hook with procaster. The team is aware of it, and is working on a fix. When we have a fix, we will first post it to the forms as a beta. The team is working as fast as possible to correct this issue.